Chelsea Lately regular Jen Kirkman is "childfree by choice." Here's what she'd like to say to everyone who can't stop telling her she'll change her mind. You'll Change Your Mind. That's what everyone says to Jen Kirkman-- and countless women like her--when she confesses she doesn't plan to have children. But you know what? It's hard enough to be an adult. You have to dress yourself and pay bills and remember to buy...